Koopa Paratroopas also known as Parakoopas, Sky Troopas in Super Mario represent a consistent group of turtle-like creatures. There are many different types of Koopas, the most common being Koopa Troopas.
They lose their wings when they are attacked in the air, such as getting stomped or hurt by fireballs, turning them into regular Koopa Troopas. Typically, Koopa Paratroopas are placed in large gaps where Mario and Luigi must stomp on rows of them to traverse a pit or reap other rewards.